Stump-puller



J. F. G ORMAN.

STUMP FULLER. APPLICATION FILED MAY 3, 1916. RENEWED IAN. 17,1920.

1,348,940. Patent d Aug- 10, 1920.

2 SHEETS-SHEET W/fnesses;

J. F. GORMAN.

STUMP FULLER.

APPLICATION FILED MAY 3. I916.

RENEWED JAN. 17,1920.

Patented Aug. 10, 1920.

2 SHEEIS-SHEET 2.

W/zness es /r1 rentoz Atty UNITED STATES PATENT OFFICE.

JOHN F. GORMAN, OF PORTLAND, OREGON, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

A. J. KIRSTIN COMPANY, OF ESCANABA, MICHIGAN,

A CORPORATION OF MICHIGAN.

STUMP-PULLER.

To all whom it may concern:

Be it known that I, JOHN F. GORMAN, a citizen of the United States,residing in the city of Portland, county of Multnomah, and State ofOregon, have invented certain new and useful Improvements inStump-Pullers, of which the following is a specification.

My invention relates to stump pullers, and more particularly to portablestump pullers which can be readily moved from place to place andoperated by means of a hand lever for winding up a cable attached tofastump which is to be pulled out of the ground, although, of course, itis to be understood that my device can be used for winding up a cablehitched to any object which it is desired to move.

Among the salient objects of my invention are,to provide in a device ofthe character referred to, means whereby the operating drum can beunwound, step by step, by means of an operating hand lever, when saiddrum is under strain on the cable, and to 'prov1de an improved andsimplified construction and arrangement which will cheapen the cost ofmanufacture, will strengthen the device, will provide a third speed foroperating the drum without complicating or materially increasing thecost of the device, and which'will make it possible to readily take thedevice apart, or to assemble it for any purpose whatsoever.

In order that others may. understand my invention I have shown apractical embodiment thereof in the accompanying two sheets of drawingswhich I will now describe.

Figure 1 is a top plan View of my invention with the operating pawls, ordogs, removed;

Fig. 2 is a vertical sectional view through the invention taken on line2-2 of Fig. 1, with one set of pawls shown in place;

Fig. 3 is an inside view of the side member, shown in edgeview at thetop of Fig. 1, showing the pawl-actuating mechanisms attached to theinside of said side member;

Fig. 4 is a detail view through Fig. 3, taken on line 4 4E;

Fig. 5 shows top and side views of a T- bolt for holding the pawls intheir seats; and

Fig. 6 is a detail sectional view taken on line 6-6, Fig.1, with pawlsin place, showing aslightly modified form of T-bolt for Specification ofLetters Patent. P t t Aug 10, 1920 Renewed January 17, 1920. Serial Noj352,231.

holding the pawls which operate upon the third speed gear.

Referring now more in detail to the draw- 1ngs, my invention comprisesin combination two side members 1 and 2, the general form of which willbe clearly seen from Fig. 3, in which is shown the inside of one of saidmembers, each of said side members being provided with a drum receivingbearing socket 3, an operating shaft socket 1, a take up block socket 5,and an axle socket 6. At the axle socket 6, each of said side members isprovided on its outside with a sleeve bearing lug, as 6 for a purposehereinafter referred to. Rotatably mounted in the drum socket 3, is adrum 7, having formed as a part thereof at one side, a gear 8, andhaving formed as a part thereof at its opposite side, a gear 9, saidgears being slightly of convexed form on their adjacent, or inner,sides, as at S and 9 which prevent wearing contact between the cable andthe edges, or rims, of the gears. Said drum is also provided with acable receiving socket 7, adjacent to which, said drum is made somewhatthicker, as at 7 whereby as the cable passes around the drum from saidsocket 7, it will not rest directly upon the cable hook. but will runupon the heavy portion 7? of the drum, which vwill take the strain ofthe cable and thus prevent a strain being applied to the cable at itspoint of attachment. Said drum 7, is hollow and'has formed at itsopposite ends sleeve-like bearing extensions 77 which are inserted inthe bearing sockets 33, in the side members 1 and 2, the sleeveextension 7, being provided on its outer edge with ratchet teeth 7adapted to mesh with corresponding ratchet teeth 10, formed on the innerend of an operating member 10, which operating member ias a square shankportion, as indicatechto receive an operating lever, and which operatingmember 10 is mounted upon and keyed to a shaft 11, which extends intothe hollow drum through the sleeve extension 7 thereof, and is providedwith a spring 12, shown in dotted -lines in Fig. 1, said spring bearingat its inner end against a washer 13, held in place by a pin 14, throughthe inner end of the shaft 11. At its outer end, said spring bearsagainst the inner end of the sleeve extension 7 of the drum, as at 15,whereby said spring operates to draw said shaft 11, in

' wardly, and to.:hold.;the ratchet member, 10,

I .in operating engagement with the ratchet teeth 7, on the sleeveextension 7 of the drum 7 Thus by applying the operating lever to the"shanklO, of said operating member, the drum 7, can be turned directly,the operating member 10, operating as a ratchet,'when turned backwardly,and turningthe drum with it when turned forwardly.

The operating ratchet member 10, being carried by the sleeve bearingportion 7, of

. 'th'edrum 7, is readily inserted through the bearing socket 3. Mountedthrough the axle sockets 6-6, and through their sleeve lugs 6.-6 is abolt 16. Apipe, orspacing sleeve, 17,shown in section in Fig. 2,'isplaced on said'bolt 16, between theside members 1. and.2.- The sleevevlugs 6 't 6 on'the members 1 and 2, receive thereon the Wheels 18'18.Saidv bolt is held in place by.-;a"nut- 19. Thus by removing the nut 19,the bolt '16, can be withdrawn, which permits the removal :of the-wheelsl8 18,

andalso the spacing member, or sleeve 1.7.

I Rotatabl i mounted in the operating shaft bearing sockets 4, of theside menioers 1 and .2, is a rocker shaftinember 20, which projectsthrough the side member- 1, and is provided I with a square operatingshank 21. Said. rocker shaft is provided near the side member 1, withtwo pawl receiving sockets, as 20, extending longitudinally of saidshaft,

with a bolt hole22, through said shaft 20, between said sockets. At itsopposite end,

yaeent said side IDGHlbGr-Q, said rockershaft is provided withsimilarpawl sockets 20",

formed therein,'but' spaced farther apart than are'the sockets 20 Y Abolt hole is also formed through said shaft 20, between thesockets 20 24and25 designate two operating pawls having their lower ends pivotallyseated in the'sookets 20 as clearly indicated in Figs. 2 and 3., Thepawl 24, is

provided on its outer face with a cam por t1on24, and on its inner face\ltll a cam portion 24 said pawl 24, being adapted to engage the gear 8,whilethe pawl 25 engages the same ear directly underneath the pawl 24,wherefore as the rocker shaft 20, is

oscillated about its axis, said pawls 24 and 25, are alternately raisedand lowered. T he pawl 25, has an arm 5", which extends back intooperating engagement with the cam spri'n 0s 28 portion 24, on the pawl24, as clearly indicated in Figs. 2 and 3. Attached to said pawls 24 and25, are operating rods 26 and 27, provided with washers 26 and 27 Alsoat its lower end, as at 31, to the inside of the side member 1, and atits upper end being 27, 28, 29,30, 311,32, as and provided with a dog 32pivotally attached thereto and adapted to seat in a notch 33,

formed in the upper edge of the side member 1", as clearly indicated inFig." 3.. ii coiled spring 34, is attached atone'eiithas at 3 5, to theinside of the side member, 1, and

at itsopposite end to the lever 30, as at 36.

hen said lever 30, is pressed forwardly, in the position shown in fulllines in Fig. 3, with the dog 32, bearing in the notch 33, in the sidemember 1, the spring 34, is out of commission, and-the springs 28 and29, op.- erate on-the r ds 26 and 27, tending to press the pawls 24 and25, outwardly,iaway ,froin the gear8v If the lever 30,- is released bylifting the dog 32, out of the'notch 33, then the spring 34, operatesdraw the lever rearwardly, as shown in dotted lines in Fig.

ends of said nawls 24and25 holdin them pivotally in'place, as is clearlyindicated-in Figs. 2, 3'and 4. A spring 39, isinounted upon the'bolt37,-on the under side of the operating or rocker shaft 20, which tendsto draw said bolt yieldingly downwardly, whereby said pawls 24 and 25are held under a certain tension which keeps them from becoming loose.Said rocker shaft is provided on its under side with a pair of lugs 40and 41, which are adapted to engage a fixed lug 42, formed 'on the innerface of the side member 1,.whereby the rocking movement of saidshaft 20,is limited in each direction.

Referring now-to Figs. land 6, there is pivotally seated in the sockets20 of the rocker shaft 20, two straight pawls 43 and 44, which are drawninto engagement with the third speed gear 9, by means of rods 45 and 46,in the same manner in which the pawls 24 and 25 are drawn into the gear8, there being another lever similar to lever 30, and a spring similarto spring'34, on the inside of the side member 2, but which are notshown in the drawings for the reason that the parts are the same as theparts 26, Said pawls 43 and 44 are held in place by a T-iiiernber 47,inserted through openings. 43 and 44 in the pawls 43' and 44,and'bearing downwardly upon the rounded portions 43 and 44", of said pawls,as clearly indicated in Fig. 6,.said T-n'iember 47, being heldyieldingly in place by means of a bolt 48, having being designated 51Fig. 3. locking between the take-up block 51, and

a ball head 49, seated in a suitable socket in said T-member 47, with aspring 50, operating upon the lower end of said bolt 48, in the mannerclearly shown in said Fig. 6, for holding said T-member 47, and saidpawls 43 and 44, yieldingly in operating positions. As said rocker shaft20, is rocked, the pawls 43 and 44, if they be set in their Operatingpositions, alternately engage and move forwardly the gear 9, indicatedin dotted lines.

A take-up block 51, having sleeve lugs 52-52, on its opposite sides, isinserted between the side members land 2, with the sleeve lugs 52inserted in the bearing sockets 5, in the side members 1 and 2, saidtake-up block being held in place by means of bolts 5353, insertedthrough said sleeve lugs 5252, and said side members land 2, as clearlyindicated in Fig. 1, said take-up block is thus pivotally securedbetween the side members 1' and 2, and because of the sleeve lugs52-.52, there is 110-shearing strain on the bolts 5353. The take-upblock 51, is provided with the usual wedge block 54, which is providedwith the slot 55, whereby it can be adjusted to secure a cable to thetake-up block 51, ina manner which is well understood.

Referring to Fig. 1, I have provided on the inner face ofthe gear 8, alug 8 the purpose of which is to engage the cable after it has beenwrapped around the drum 7, in one layer, for the purpose of causing saidcable to start back in another layer toward the opposite gear 9, insteadof piling in a miscellaneous manner, thus keeping the cable evenly woundupon the drum 7,

Referring to the take-up block 51, it is provided at its opposite sideswith two square lug members 51 f51 adapted to be seated in notches inthe small ends of the sidemembersl and 2, one of said notches Thisinterthe side members 1 and 2, insures better alinem'ent through themachine and also makes the machinemore rigid. It will be noted also thatwhen the cable is inserted in said block around the wedge block 54, thestrain on the cable operates to lock the cable by reason of the movementof the wedge block 54, into the reduced portion of the take-up block 51.It will also be evident that the cable can be very quickly taken up byhand adjustment through'this take-up block 51, in a manner wellunderstood.

Attention is also called to an important feature in connection with thebolts 37 and 48, and the T-members 38 and 47, which hold the lower endsof the pawls 24 and 25, and 43 and 44, in their respective sockets inthe rocker shaft 20. This flexible ioint be tween the bolts 27 and 48,and the T-members 38 and 47, compensates for any unevenness orimperfectionin the formation of the sockets, or of the rounded portionsof the pawls, insuring a perfect seating of the pawls and holding themin proper positions without interfering with their free action. Thisconstruction also permits for taking up Wear under the action of thesprings 39 and 50, and thus prevents loosening of the parts.

The operation of my invention may be briefly described as follows:

Assuming that the device has been set in place and is anchored by meansof a cable attached to the take-up block 51, and that a cable attachedto the stump, or other ob ject to be moved, is attached to the drum 7,said drum may be operated directly by means of an operating lever (notshown), upon the shank 10, of the shaft 11, inserted in the end of thedrum sleeve. Thus by operating said lever, said drum is directly turnedand the cable wound thereupon, the ratchet mechanism at 10 permittingthe hitch movements of-the operating lever, in a manner well understood.Either set of pawls, 24 and 25 or 43 and 44, may be set to preventreverse movement of the drum during the hitch movements of the operatinlever.

T3y applying the operating lever to the shank '21, of the rocker shaft20, said rocker shaft can be oscillated or rocked, and either set of theoperating pawls 24 and 25, which operate drum gear 8, orpawls 43 and,44, which operate drum gear 9, can be set for action. These pawls areset for action by releasing the dog 32, upon the upper end of the lever30, so as to permit said lever 30, to be drawn rear-wardly by the spring34, said lever 30 also operating to yieldingly pull the pawls into thegears 8 or 9, by means of 'therods 26 and 27, or the rods 45 and 46, asthe case may be. The operation of the pawls 43 and 44, upon the drumgear 9, is alternate and independent of each other, the pawl 44,operating to turn the gear 9, when the rocker shaft 20, is rocked in onedirection, and the pawl 43, operating tocontinue the movement of saiddrum gear 9, as said rocker shaft is rocked in the opposite direction,these pawls operating upon a second speed gear, 9.

Referring now to the operation of pawls i 24 and 25, and assuming thatthe dog 32, has been lifted out of the notch 33, so that lever 30, isdrawn backwardly to spring 34, to the position shown in dotted line inFig. 2, said pawls 24 and 25 are drawn yieldingly inwardly to the gear8. As the rocker shaft 20, is rocked in one direction, the pawl 25advances the gear 8, while the pawl 24, is drawn downwardly one notch.As the rocker shaft 20, is rocked in the opposite direction, the gear 8,is advanced by the pawl 24, while the pawl 25 recedes one notch, andthus, notch by notch, the gear 8 is ad 7 spring 34, out ofcommission andcompresses springs 28' and 29 in. a. way to force the pawls 24 and 25outwardly, or away from the gear 8. It will beunderstood, of course,

that so long as one of said pawls 2 L 01-25 .is in engagement with anotch of the gear.

8, it can not be pressed outwardly by the action of springs 28 or 29. InFig. 3, pawl 25 is holding the gear 8, against backward movement, thatis, in the direction indi-- cated by the arrow. As soon as pawl 25 takesthe loadon theggear 8, pawl 2a is forced outwardly by its spring 28,-thecanr portion 24, of said pawl 2d, preventing said pawlfrom moving undulyaway from the gear. ,Nowas the'rocker shaft 20,15 rocked so as to allowpawl 25 to move downwardly with the load on the gear 8, the pawl 24L, byreason of the engagement of its cam portion 24 with the hook or arm 25,attached to pawl 25, is being forced inwardly against the tension of itsspring 28, until it takes the load one notch back on the gear 8,'as itis about ready to do, inthe position shown in'Fig. 3. As the pawl 24, isthus-forced into the gear 8, by the engagementof its camQP, with the arm25, and

' takes'the load on the gear 8, the pawl-25 is pressed outwardlyby itsspring 29, until:

it comes in contact with the cam =24), on

the inner face of the pawl 24-. As the rockers'haf-t 20, is rocked topermit the pawl 2 with itsload onthe gear 8, to move downwardly, the camportion 24:",on the inner face'of saidpawl 2d, engages the back of pawl25,,and forces itinwardly into the gear 8, one notch back of its formerposition, thi isby the alternating movements of the rocker shaft 20 andthe pawls 2d and 25, operating upon each other through their camportions,-the.gear- 8,} and the drum 7 can be unwound, o-r-reverscd,under strain,

to slackcn the cable. It will be understood, of course, that this back,or unwinding, movement of the gca'rS, notch by notch, cannot bedonewithout strain on the drum 7. As soon as the tension is released onthe drum 7, and the gear 8, the pawl's 24. and 25 are both automaticallymoved outwardly by their springs 28 and 29, thus glvlng'free 'movementof the drum and the gear 8.

I am aware that changes in the details of construction and arrangementhere shown torpurposes of illustrat on'can be-made without departingfrom the spirit of my in vention, and I do not, therefore, limit myinvention to this particular embodiment thereof except as I may belimited by the hereto appended claims.

-l. In adevice of the character referred to, in combination, supportingmeans, adrum rotatably mounted therein and provided withan-operating'geana rocker member, a pair of operating pawls pivotallycarried by said rocker memberand adapted to alternately engage said gearin an operating manner as said rocker member; is rocked, meansyieldingly moving said pawls away from said gear, and operatingconnections between said pawls for alternately and positively movingsaidipawls intoholding engagement with said gear, as said rocker memberis rocked. r i

2. In a device of the character referred to, incombination,supportingmeans, a drum rotatablymounted therein andprovided withsagear, and means for operating said drumcomprising a'rocker member, a pair of operatingipawlsmounted thereon and adaptedtoengage said gear, one above the other, andmeans whereby one pawloperates upon the other pawl to move'it into operatingengagement withsaid. gear, for the purpose referred'to, 7 V V .3. In a device .of thecharacter referred to, in combination, supporting means, a drumrotatably mounted therein and provided with a gear, a rocker membermounted to be rocked in said supporting means, operating pawls carriedby said rocker member, and cam portions formed on one of said pawls withoperating connections with the other ofsaid pawls, whereby said pawlsare alternately moved by -a cam action into operating connection withsaid gear. I

ti.- In a device of the character referred to, in combination, asupporting means, a drum rotatably mounted therein and, provided with;aflgear, a rocker.;'member mounted to be rocked in said supportingmeans,operating 'pawls carricd by said rocker member, and'means yieldinglymoving said pawls away from said gear, and means for positivelyandalternately moving said pawls into operating engagement with saidgear.

5. Inadevice of the character referredto, in combination, supportingmeans,-a drum rotatably' mounted therein and provided with two:different speed gears, a rocker member, a pair of operatingpawlspivotally carried by said rocker memberfor each of said gears, saidpawls being adapted to be set into operative or inoperative positionsrelativeto their respective gears, as desired, and means for yieldinglymoving said pawls into said gears when set in operative positions.-" I V'6 In a device'of the character referred to,

in combination, supporting means, a drum rotatably mounted therein andprovided with two different speed gears, a rocker member, a pair ofoperating pawls pivotally carried by said rocker member for each of saidgears, said pawls being adapted to be set into operative or inoperativepositions relative to their respective gears, as desired, one pair ofsaid pawls being provided with means adapted to be set for yieldinglymoving said pawls away from their gear, and operating connectionsbetween said pawls for positively and alternatelymoving them intoholding engagement with their gear in opposition to the means foryieldingly moving them away from said gear.

7. In a device of the character referred to, in combination, a pair ofside members having bearing sockets formed therethrough opposite eachother, a drum-having bearing sleeves formed at its outer ends as a partthereof and adapted to be inserted through opposite bearing sockets insaid side members, said drum being provided with an operating gear, aratchet mechanism mounted in the end of one of said bearing sleeves ofsaid drum, whereby said drum can be directly operated thereby, a rockermember mounted through opposite bearing sockets in said side members andprovided with an operating shank at one end, operating pawls pivotallymounted on said rocker member, means for yieldingly moving said pawlsalternately into operating engagement with said gear as said rockermember is rocked, a take-up block having sleeve lugs adapted to beinserted through opposite bearing sockets in said side members, andmeans for securing said side members to said take-up block.

8. In a device of the character referred to, in combination, supportingmeans, a drum provided with a gear, a rocker member provided withbearing sockets at opposite sides of its axes of rotation, a pair ofpawls pivotally seated in said sockets and adapted to operate on saidgear, a T-member for holding said pawls in place, and a bolt throughsaid T-member and said rocker member, substantially as described.

9. In a device of the character referred to, in combination, supportingmeans, a drum provided with a gear, a rocker member pro vided withbearing sockets at opposite sides of its axes of rotation, a pair ofpawls pivotally seated in said sockets and adapted to operate on saidgear, a T-member for holding said pawls in place, and a bolt throughsaid T-member and said rocker member, said bolt being provided with aspring, whereby to yieldingly hold said T-member in holding engagementwith said pawls.

10. In a device of the character referred to, a pair of side membershaving formed therein, opposite each other, bearing sockets,

and having formed on their outer sides bearing sleeves, wheels mountedupon said bearsleeves out ide of said side members, a bolt through saidbearing sleeves, wheels and side members, and provided with a spacingsleeve between said side members, whereby, by removing the bolt, saidwheels can be removed from said side members and said side membersdisconnected from each other, substantially as described.

11. In a device of the character referred to, in combination, a pair ofside members provided with bearing sockets opposite each other and alsoprovided on their outer sides with bearing sleeves, wheels mounted uponsaid bearing sleeves, a cable drum having bearing portions at itsopposite ends adapted to be inserted through opposite bearing sockets insaid side members, said drum being provided with an operating gear, arocker member adapted to. be inserted through opposite bearing socketsin said side members, said rocker member being provided with operatingpawls, means for holding said pawls in or out of operating engagementwith said gear, as desired, a takeup block having sleeve lugs insertedin opposite bearing sockets in said side members, and means for securingsaid side members together at a space apart, substantially as described.

12. In a device of the character referred to, a pair of side members, atake-up block pivotally mounted between said side menibers, andinterfitting connections between the opposite sides of said take-upblock and said side members, whereby to hold said take-up block relativeto said side members.

13. In a device of the character referred to, in combination, a pair ofside members, a cable drum, means for operating said cable drum, atake-up block mounted between said side members, said takeup blockhaving tapering side portions, and a wedge block adjustably mountedbetween said tapering side portions and adapted to receive a cabletherearound and between said side portions and the opposite sides ofsaid wedge block, whereby to adjustably lock said cable in said take-upblock, substantially as described.

14. In a stump puller, a frame, a cable winding drum mounted thereon, acable attaching means pivotally mounted on the frame on an axis parallelwith the axis of the drum, and means for limiting the pivotal play ofthe cable attaching means when in operative position.

15. In a stump puller, a pair of side frames provided with bearings andsockets, means connecting the side frames together, a drum between theside frames mounted in bearings thereof, a cable attaching means havingtrunnions seated in sockets in the side frames, and bolts passingthrough the trunnion s' and side frames for securing the cable attachingmeansin place.

16. In. a stump puller, a frame, a cable drum mounted thereon, a cableattaching means pivotally mounted on the frame on an axis parallel withthe axis of the drum, and lugs on said means engaging said frame forlimiting the pivotal play of the cable attaching means. 7

17. Ina stump puller, a pair of side frames provided With sockets, boltsconnecting the side frames together, a drum between the side framesmounted in bearings thereof, a cable; attaching member having trunnionsseated in sockets in the side frames, boltspassing through the trunnionsand side frames for securing the cable at- I taching member in place,and means on said member for engaging the cable.

Signed at Portland, Multnomah county, 20

In presence of I. M. GRIFFIN, J. C. STRENG.

